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Benylin Mucus Cough Max Honey & Lemon - 300ml

Benylin Mucus Cough Max Honey & Lemon - 300ml

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  • ✔️ Loosens and clears chest mucus with guaifenesin expectorant
  • ✔️ Suitable for adults and children aged 12 and over
  • ✔️ Honey and lemon flavour for easier, more pleasant dosing
  • ✔️ Non-drowsy formula safe for daytime use
  • ✔️ 300ml bottle provides a full multi-day treatment course

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What Is Benylin Mucus Cough Max Honey Lemon?

 

A chesty cough that just won't shift can be exhausting. Whether it's dragging on after a cold or making it hard to sleep, the underlying problem is often the same — thick, sticky mucus sitting in your airways. Benylin Mucus Cough Max honey lemon is an oral expectorant syrup formulated to tackle exactly that. It contains guaifenesin 100mg per 5ml as its active ingredient, a well-established expectorant used to help loosen and clear mucus from the chest. The honey and lemon flavour makes it more pleasant to take, which matters when you're already feeling rough. You can browse our full range of cold and flu remedies if you need additional support alongside this syrup.

This is a 300ml bottle — a generous size that gives you enough for a full course of treatment without running out mid-week. It's available over the counter without a prescription and is suitable for adults and children aged 12 and over.

 

How Does Benylin Mucus Cough Max Work?

 

Guaifenesin, the active ingredient in this syrup, works as an expectorant. Put simply, it acts on the mucous glands in your respiratory tract to increase the volume of secretions while reducing their viscosity — making the mucus thinner and easier to shift. Here's how that process unfolds:

  • Guaifenesin stimulates the secretory cells lining the bronchial passages.
  • This increases the water content of mucus, thinning it out.
  • Thinner mucus is more easily moved by the cilia (tiny hair-like structures) in your airways.
  • You can then cough it up more effectively, clearing the chest.

It doesn't suppress the cough reflex — it works with it. That's an important distinction. Suppressing a productive cough can actually trap mucus further down the airways, so an expectorant approach is often more appropriate for chesty, mucus-producing coughs.

 

Who Should Use Benylin Mucus Cough Max?

 

This syrup is designed for people dealing with a chesty, productive cough — the kind where you can feel mucus in your chest but struggle to bring it up. It's particularly useful during and after respiratory infections like colds or flu. That said, it's not right for everyone.

It may be suitable for you if you:

  • Are aged 12 or over
  • Have a chesty cough with mucus production
  • Are experiencing symptoms associated with a cold or upper respiratory tract infection
  • Want a non-drowsy, daytime-friendly cough remedy

It is not suitable for dry, tickly coughs — those require a different type of medicine (a cough suppressant rather than an expectorant). If you're unsure which type of cough you have, your pharmacist can help you decide.

 

How Does Benylin Mucus Cough Max Compare to Other Cough Syrups?

 

Feature Benylin Mucus Cough Max Honey & Lemon 300ml Benylin Dry Coughs Original
Active ingredient Guaifenesin 100mg/5ml Dextromethorphan hydrobromide
Cough type Chesty / productive cough Dry / tickly cough
Mechanism Expectorant — thins mucus Cough suppressant — reduces cough reflex
Suitable age 12 years and over 12 years and over

 

How Should You Store Benylin Mucus Cough Max and Is It Clinically Suitable for You?

 

Store this syrup below 25°C, away from direct sunlight and out of the reach of children. Once opened, check the label for any in-use storage guidance. Do not use after the expiry date printed on the bottle. If you have liver or kidney problems, are pregnant, or are breastfeeding, speak to your doctor or pharmacist before using this product. People with a persistent cough caused by asthma, chronic bronchitis, or smoking should seek medical advice before using any cough remedy. If you're also managing other symptoms, our ear, nose and throat range may offer complementary support.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Benylin Mucus Cough Max Honey & Lemon 300ml specifications
Treatment category Cough remedies / Expectorants
Mechanism of action Expectorant — reduces mucus viscosity and increases secretion volume
Effective for Chesty, productive coughs associated with colds and respiratory infections
Suitable for Adults and children aged 12 years and over
Active ingredient Guaifenesin 100mg per 5ml
Pack size 300ml
UK classification General Sale List (GSL)
Drug class Expectorant
Preparation Oral syrup
Route of administration Oral

Specifications of Benylin Mucus Cough Max Honey & Lemon 300ml

 

What Is Benylin Mucus Cough Max and What Is It Used For?

 

Benylin Mucus Cough Max Honey & Lemon is an oral syrup used to relieve chesty coughs where mucus is present. Its active ingredient, guaifenesin, is classified as an expectorant — a type of medicine that helps to loosen and thin mucus in the airways so it can be coughed up more easily. It is used to manage symptoms of productive coughs associated with colds, flu, and mild upper respiratory tract infections. The honey and lemon flavour is designed to make the syrup more palatable. This product does not treat the underlying infection itself; it provides symptomatic relief only.

 

What Do You Need to Know Before Using Benylin Mucus Cough Max?

 

Before taking this syrup, read the following carefully. There are situations where this medicine may not be appropriate for you.

Do not use this product if you:

  • Are under 12 years of age
  • Are allergic to guaifenesin or any other ingredient in the syrup
  • Have a persistent or chronic cough caused by asthma, emphysema, or smoking without first speaking to a doctor
  • Have a cough accompanied by excessive mucus production that may indicate a more serious condition

Speak to your doctor or pharmacist before use if you:

  • Are pregnant or breastfeeding
  • Have liver or kidney impairment
  • Are taking any other medicines, including herbal remedies
  • Have a high temperature (fever) above 38°C alongside your cough

Known drug interactions:

  • No clinically significant interactions are known at standard OTC doses of guaifenesin
  • Always inform your pharmacist of all medicines you are currently taking

 

How Should You Use Benylin Mucus Cough Max?

 

Always use this medicine exactly as described in the patient information leaflet or as directed by your pharmacist. Using the dosing cup provided ensures accuracy — do not estimate with a household spoon.

  1. Shake the bottle gently before use.
  2. Measure the correct dose using the dosing cup or measuring spoon provided.
  3. Swallow the syrup directly — do not dilute.
  4. Take up to four times daily, leaving at least four hours between doses.
  5. Do not exceed 40ml in any 24-hour period.
  6. Drink plenty of fluids throughout the day to help thin mucus further.
Age Group Dose Frequency Max daily dose
Adults & children 12+ 10ml (200mg guaifenesin) Up to 4 times daily 40ml (800mg)
Children under 12 Not suitable — do not use

If you're also managing pain or discomfort alongside your cough, you may find our pain relief range helpful for broader symptom management.

 

What Are the Possible Side Effects of Benylin Mucus Cough Max?

 

Like all medicines, this syrup can cause side effects, although not everyone will experience them. Most side effects are mild and resolve on their own.

Common side effects:

  • Nausea
  • Stomach upset or discomfort
  • Dizziness
  • Headache

Less common side effects:

  • Vomiting
  • Skin rash
  • Drowsiness

Stop using this product and seek immediate medical attention if you develop signs of an allergic reaction, including swelling of the face, lips, or throat, difficulty breathing, or a severe skin reaction. These reactions are rare but serious.

 

How Should You Store Benylin Mucus Cough Max?

 

Correct storage helps maintain the effectiveness and safety of this medicine. If you're also taking vitamins or supplements to support your immune system during illness, check out our vitamins and supplements range for options that may complement your recovery.

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and heat sources
  • Keep the bottle tightly closed when not in use
  • Keep out of the sight and reach of children
  • Do not use after the expiry date printed on the label
  • Do not dispose of medicines via wastewater or household waste — return unused medicine to your pharmacy

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Benylin Mucus Cough Max Honey & Lemon online in the UK?

You can buy Benylin Mucus Cough Max Honey & Lemon 300ml directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. Simply add it to your basket and choose your preferred delivery option. It's available without a prescription as it's a General Sale List medicine.

How does Benylin Mucus Cough Max work in the body?

The active ingredient, guaifenesin, is an expectorant that works by increasing the water content of mucus in your airways, making it thinner and less sticky. This allows the cilia in your bronchial passages to move the mucus upward more effectively, so you can cough it out. It doesn't suppress the cough — it makes the cough more productive.

How do I use Benylin Mucus Cough Max step by step?

Shake the bottle, then measure 10ml using the dosing cup provided. Swallow the dose directly without diluting it, and repeat up to four times daily with at least four hours between doses. Never exceed 40ml in a 24-hour period, and always read the patient information leaflet before starting treatment.

What is the correct dose of Benylin Mucus Cough Max for adults?

Adults and young people aged 12 and over should take 10ml (equivalent to 200mg of guaifenesin) up to four times a day. The maximum dose in any 24-hour period is 40ml. If you are unsure about the right dose for your situation, speak to your pharmacist before use.

Can children under 12 use Benylin Mucus Cough Max?

No — this product is not suitable for children under 12 years of age. If you need a cough remedy for a younger child, speak to your pharmacist or GP who can recommend an age-appropriate option. You can also browse our baby and toddler range for products designed for younger children.

What are the side effects of Benylin Mucus Cough Max?

The most commonly reported side effects include nausea, stomach discomfort, dizziness, and headache. Less commonly, some people may experience vomiting or a mild skin rash. If you develop any signs of an allergic reaction — such as facial swelling, difficulty breathing, or a severe rash — stop taking the syrup and seek urgent medical attention.

How do I manage side effects of Benylin Mucus Cough Max?

If you experience nausea, try taking the syrup with a small amount of food or a glass of water. Mild dizziness usually passes quickly — sit or lie down until it subsides. If side effects are persistent or troublesome, stop use and speak to your pharmacist or GP for further guidance.

Who should not use Benylin Mucus Cough Max?

This syrup is not suitable for children under 12, people with a known allergy to guaifenesin, or those with a chronic cough caused by conditions such as asthma, emphysema, or smoking without medical advice. Pregnant or breastfeeding women should consult their doctor or pharmacist before use. People with liver or kidney problems should also seek advice first.

Is Benylin Mucus Cough Max suitable during pregnancy?

If you are pregnant or think you might be pregnant, you should speak to your doctor or pharmacist before taking this syrup. The safety of guaifenesin during pregnancy has not been fully established, and a healthcare professional can help you weigh up the risks and benefits. Do not self-medicate during pregnancy without professional guidance.

What happens if I miss a dose of Benylin Mucus Cough Max?

If you forget a dose, simply take it as soon as you remember — provided it has been at least four hours since your last dose. Do not double up to make up for a missed dose. This is a symptomatic remedy, so missing one dose is unlikely to significantly affect your recovery.

How long can you use Benylin Mucus Cough Max for?

You should not use this syrup for more than seven days without consulting a doctor or pharmacist. If your cough persists beyond a week, worsens, or is accompanied by a high fever, chest pain, or blood in the mucus, seek medical advice promptly. Prolonged coughs can sometimes indicate an underlying condition that needs investigation.

What is the best time to take Benylin Mucus Cough Max?

There is no single "best" time — the syrup can be taken at any time of day, up to four times daily with at least four hours between doses. Many people find it helpful to take a dose in the morning to help clear overnight mucus build-up, and again before bed to ease nighttime coughing. Staying well hydrated throughout the day also helps the expectorant work more effectively.

What are alternatives to Benylin Mucus Cough Max?

Other guaifenesin-based expectorant syrups are available as alternatives for chesty coughs. If your cough is dry and tickly rather than productive, a cough suppressant containing dextromethorphan may be more appropriate. Speak to your pharmacist to identify the right product for your specific symptoms, as using the wrong type of cough medicine can be counterproductive.

Can I take Benylin Mucus Cough Max with other cold and flu medicines?

Be cautious about taking multiple cold and flu products at the same time, as some combination remedies already contain guaifenesin — taking them together could lead to exceeding the recommended dose. Always check the ingredients of any other medicines you are taking and ask your pharmacist if you are unsure. You can explore our cold and flu range for compatible products.

What are the latest studies on guaifenesin for mucus coughs?

Guaifenesin has been used as an expectorant for decades and remains one of the most widely studied OTC cough ingredients. Clinical evidence supports its role in reducing mucus viscosity and improving mucociliary clearance in the airways. While research continues, it is currently recognised by regulatory bodies including the MHRA as an effective expectorant for symptomatic relief of productive coughs.

How Should You Use Benylin Mucus Cough Max?

Using this syrup correctly gives you the best chance of relieving your chesty cough quickly and safely. Always use the dosing cup or measuring device provided — never estimate with a kitchen spoon, as this can lead to inaccurate dosing. Drink a full glass of water after each dose to help thin mucus further and support the expectorant action.

What Is the Correct Dose of Benylin Mucus Cough Max?

The dose varies by age, and it is important not to exceed the maximum daily amount. Children under 12 must not use this product under any circumstances — if you need a cough remedy for a younger child, speak to your pharmacist for an age-appropriate alternative.

When Is the Best Time to Use Benylin Mucus Cough Max?

This syrup can be taken at any time of day, making it flexible to fit around your routine. Many people find it most useful first thing in the morning — when mucus tends to have built up overnight — and again in the evening before bed to reduce nighttime coughing. Because it is non-drowsy, it is suitable for use during the day without affecting your ability to concentrate or drive.

Spacing your doses evenly throughout the day (roughly every four to six hours) helps maintain a consistent level of the medicine in your system, which may improve symptom control over the course of the day.

How Long Can You Use Benylin Mucus Cough Max For?

This syrup is intended for short-term use only. Do not use it for more than seven consecutive days without speaking to a doctor or pharmacist. Most chesty coughs associated with a cold or mild respiratory infection will begin to improve within a few days of treatment. If your cough is no better after a week, or if it worsens at any point, becomes accompanied by a high fever, chest pain, or you notice blood in your mucus, stop using the syrup and seek medical advice promptly.

Prolonged coughing can sometimes indicate an underlying condition — such as a chest infection or asthma — that requires a different approach to treatment. Don't ignore a cough that lingers.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

How Should You Use Benylin Mucus Cough Max?

Using this syrup correctly gives you the best chance of relieving your chesty cough quickly and safely. Always use the dosing cup or measuring device provided — never estimate with a kitchen spoon, as this can lead to inaccurate dosing. Drink a full glass of water after each dose to help thin mucus further and support the expectorant action.

What Is the Correct Dose of Benylin Mucus Cough Max?

The dose varies by age, and it is important not to exceed the maximum daily amount. Children under 12 must not use this product under any circumstances — if you need a cough remedy for a younger child, speak to your pharmacist for an age-appropriate alternative.

When Is the Best Time to Use Benylin Mucus Cough Max?

This syrup can be taken at any time of day, making it flexible to fit around your routine. Many people find it most useful first thing in the morning — when mucus tends to have built up overnight — and again in the evening before bed to reduce nighttime coughing. Because it is non-drowsy, it is suitable for use during the day without affecting your ability to concentrate or drive.

Spacing your doses evenly throughout the day (roughly every four to six hours) helps maintain a consistent level of the medicine in your system, which may improve symptom control over the course of the day.

How Long Can You Use Benylin Mucus Cough Max For?

This syrup is intended for short-term use only. Do not use it for more than seven consecutive days without speaking to a doctor or pharmacist. Most chesty coughs associated with a cold or mild respiratory infection will begin to improve within a few days of treatment. If your cough is no better after a week, or if it worsens at any point, becomes accompanied by a high fever, chest pain, or you notice blood in your mucus, stop using the syrup and seek medical advice promptly.

Prolonged coughing can sometimes indicate an underlying condition — such as a chest infection or asthma — that requires a different approach to treatment. Don't ignore a cough that lingers.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

What Are the Most Common Side Effects of Benylin Mucus Cough Max?

Most people tolerate this syrup well, but like all medicines, it can cause side effects in some individuals. Common side effects are generally mild and tend to resolve on their own without needing to stop treatment.

  • Nausea
  • Stomach discomfort or upset
  • Headache
  • Dizziness

Taking the syrup with a small amount of food or a full glass of water may help reduce nausea. If dizziness occurs, sit or lie down until it passes and avoid driving or operating machinery until you feel well again.

What Are the Less Common Side Effects of Benylin Mucus Cough Max?

Less commonly, some people may experience the following side effects. These are not typical but are worth being aware of before you start treatment.

  • Vomiting
  • Mild skin rash
  • Drowsiness
  • Abdominal pain

If any of these persist or become bothersome, stop using the syrup and speak to your pharmacist or GP. They can advise whether you should continue, switch to an alternative, or seek further investigation.

What Are the Serious Side Effects of Benylin Mucus Cough Max?

Serious side effects are rare but can occur. The most significant risk is an allergic reaction (hypersensitivity) to guaifenesin or another ingredient in the syrup. Signs of a serious allergic reaction include:

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Severe skin rash, hives, or blistering
  • Rapid heartbeat or feeling faint

If you experience any of these symptoms, stop taking the syrup immediately and call 999 or go to your nearest A&E department. Do not wait to see if symptoms improve on their own.

What Should You Do If You Experience Side Effects of Benylin Mucus Cough Max?

For mild side effects such as nausea or headache, try adjusting when you take the syrup — for example, taking it with food or water. If side effects are moderate or do not improve within a day or two, stop use and consult your pharmacist. You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk. This helps improve medicine safety for everyone.

Never exceed the recommended dose in an attempt to speed up recovery — this increases the risk of side effects without providing additional benefit.

Can Benylin Mucus Cough Max Interact With Other Medicines?

No clinically significant drug interactions have been identified for guaifenesin at standard over-the-counter doses. However, you should always inform your pharmacist of all medicines you are currently taking — including prescription medicines, other OTC products, and herbal remedies. Be particularly cautious about taking multiple cold and flu combination products simultaneously, as some may already contain guaifenesin, which could result in exceeding the recommended daily dose without realising it.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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